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path: root/drivers/gpio/gpiolib-acpi.c
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Diffstat (limited to 'drivers/gpio/gpiolib-acpi.c')
-rw-r--r--drivers/gpio/gpiolib-acpi.c38
1 files changed, 28 insertions, 10 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index d2e8600df02..d62eaaa7539 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -221,7 +221,7 @@ fail_free_desc:
/**
* acpi_gpiochip_request_interrupts() - Register isr for gpio chip ACPI events
- * @acpi_gpio: ACPI GPIO chip
+ * @chip: GPIO chip
*
* ACPI5 platforms can use GPIO signaled ACPI events. These GPIO interrupts are
* handled by ACPI event methods which need to be called from the GPIO
@@ -229,11 +229,21 @@ fail_free_desc:
* gpio pins have acpi event methods and assigns interrupt handlers that calls
* the acpi event methods for those pins.
*/
-static void acpi_gpiochip_request_interrupts(struct acpi_gpio_chip *acpi_gpio)
+void acpi_gpiochip_request_interrupts(struct gpio_chip *chip)
{
- struct gpio_chip *chip = acpi_gpio->chip;
+ struct acpi_gpio_chip *acpi_gpio;
+ acpi_handle handle;
+ acpi_status status;
+
+ if (!chip->dev || !chip->to_irq)
+ return;
- if (!chip->to_irq)
+ handle = ACPI_HANDLE(chip->dev);
+ if (!handle)
+ return;
+
+ status = acpi_get_data(handle, acpi_gpio_chip_dh, (void **)&acpi_gpio);
+ if (ACPI_FAILURE(status))
return;
INIT_LIST_HEAD(&acpi_gpio->events);
@@ -243,17 +253,27 @@ static void acpi_gpiochip_request_interrupts(struct acpi_gpio_chip *acpi_gpio)
/**
* acpi_gpiochip_free_interrupts() - Free GPIO ACPI event interrupts.
- * @acpi_gpio: ACPI GPIO chip
+ * @chip: GPIO chip
*
* Free interrupts associated with GPIO ACPI event method for the given
* GPIO chip.
*/
-static void acpi_gpiochip_free_interrupts(struct acpi_gpio_chip *acpi_gpio)
+void acpi_gpiochip_free_interrupts(struct gpio_chip *chip)
{
+ struct acpi_gpio_chip *acpi_gpio;
struct acpi_gpio_event *event, *ep;
- struct gpio_chip *chip = acpi_gpio->chip;
+ acpi_handle handle;
+ acpi_status status;
+
+ if (!chip->dev || !chip->to_irq)
+ return;
- if (!chip->to_irq)
+ handle = ACPI_HANDLE(chip->dev);
+ if (!handle)
+ return;
+
+ status = acpi_get_data(handle, acpi_gpio_chip_dh, (void **)&acpi_gpio);
+ if (ACPI_FAILURE(status))
return;
list_for_each_entry_safe_reverse(event, ep, &acpi_gpio->events, node) {
@@ -525,7 +545,6 @@ void acpi_gpiochip_add(struct gpio_chip *chip)
return;
}
- acpi_gpiochip_request_interrupts(acpi_gpio);
acpi_gpiochip_request_regions(acpi_gpio);
}
@@ -549,7 +568,6 @@ void acpi_gpiochip_remove(struct gpio_chip *chip)
}
acpi_gpiochip_free_regions(acpi_gpio);
- acpi_gpiochip_free_interrupts(acpi_gpio);
acpi_detach_data(handle, acpi_gpio_chip_dh);
kfree(acpi_gpio);